“Jeff was always there for me when we toured and we couldn’t have done it without him.
“Jeff was one of the most talented guys I ever knew. He was a great musical leader and guitarist and he could sing like an angel.
“I first met Jeff in 1976 when he knocked on my door in Bel Air and I invited him in, and we were friends ever since.
“I don’t know what else to say. Love and Mercy to Jeff’s family and friends, we will remember him forever.”
His life has also been remembered by actor John Stamos, who has occasionally performed with the Beach Boys since 1985.
In a series of Instagram posts, he remembered Foskett as “more than just a friend”.
“He was the one who brought the harmonies of The Beach Boys into my life, and with them, a spectrum of colour and joy I never dreamed would be part of my life,” Stamos continued.
“He was a vibrant force, a radiant soul whose laughter and wisdom touched everyone he met.
“He was an older brother in spirit, guiding, lifting, and loving me, sometimes more than I thought I deserved.”